Warm Audio Dirty Boy Jr. Booster – British-Voiced Analog Boost Pedal

🚚FAST & FREE SHIPPING from Phoenix, AZ!

🎸 Local demo available by appointment in Phoenix, AZ

Warm Audio Dirty Boy Jr. Booster

A high-headroom analog boost that moves from clean signal enhancement to British-style breakup and saturated drive, with active Bass and Treble controls plus three selectable low-end voices.

Professor’s Notes

The Dirty Boy Jr. Booster has considerably more personality than its name suggests. Rather than simply making your guitar louder, it reshapes how the signal hits the front of an amplifier, with a strong British-flavored voice that can add focus, bite, compression, and increasingly aggressive breakup. There’s a useful clean-ish boost at the beginning of the Gain range, but the real appeal is how deliberately this pedal can change the feel and response of an already-good amp.

Rig Role

The Dirty Boy Jr. works especially well as a front-end amplifier driver, signal conditioner, or gain-stage enhancer. Keep the Gain relatively low for additional output, focus, and presence, or increase it to push an amplifier into greater saturation while introducing the pedal’s own natural compression and increasingly aggressive breakup.

Its tone controls provide considerably more shaping than a conventional boost. The Bass control adds focused low end without simply making the signal bigger or looser, while Treble ranges from relatively transparent presence to a more pronounced vintage British cut. The three-position H-M-L Freq switch further shapes the low-frequency response, allowing the pedal to move between tighter rhythm sounds and fuller lead voices.

That combination makes the Dirty Boy Jr. particularly useful for conditioning the signal before it reaches an overdrive or amplifier. It can tighten and focus an already-working rig, add bite and authority to a cleaner sound, or push the front end harder for additional compression, harmonic saturation, and touch-sensitive response.

Description

The Warm Audio Dirty Boy Jr. Booster recreates the original Dirty Boy Ball Buster circuit in a compact, pedalboard-friendly format.

Its premium all-analog circuit provides up to 10 dB of high-headroom boost while retaining the touch-sensitive response and dynamic amplifier interaction of the original design. At lower Drive settings, it can enhance a clean signal with additional output, presence, and authority. As the Drive increases, the circuit moves naturally into compression, overdrive, and fuzz-inspired saturation.

The Drive control determines boost level, gain, and saturation. Rather than remaining completely clean throughout its range, it progressively adds more character and compression, allowing the pedal to function as both a signal enhancer and a gain stage.

Dedicated Bass and Treble controls provide broader tonal adjustment than a conventional one-knob boost. Bass adds focused low-frequency weight without excessive flub, while Treble moves from smoother presence to brighter, vintage British-style cut.

The three-position Frequency selector changes the circuit’s low-end response. Its tighter setting keeps rhythm sounds focused, the middle setting provides a balanced full-range voice, and the fuller setting adds weight for thicker leads and heavier drive textures.

Quick Start Settings

Professor’s Starting Point

• Gain: 9–10 o’clock
• Bass: Full counterclockwise
• Treble: Noon
• Freq: Med

Start here to hear the pedal’s core boost character with minimal added low end. Increase Gain to push the amplifier harder, then use Bass, Treble, and Freq to shape how the boosted signal interacts with the amp.

Tight Rhythm Driver

• Gain: 11 o’clock
• Bass: 1 o’clock
• Treble: Noon
• Freq: Hi

A tighter, more focused front-end push for adding attack, definition, and saturation to an already-working amplifier.

Fat, Driven Boost

• Gain: Noon–1 o’clock
• Bass: 10–11 o’clock
• Treble: 10 o’clock
• Freq: Low

Adds more low-end weight while pushing the circuit further into its own compression and breakup for a thicker, more aggressive amplifier response.

Specifications

• High-headroom analog boost and gain pedal
• Based on the original Dirty Boy Ball Buster circuit
• Up to 10 dB of clean boost
• Expanded gain range from clean enhancement to natural compression and overdrive
• British-style breakup and fuzz-inspired saturation at higher Drive settings
• Touch-sensitive response designed for dynamic amplifier interaction
• Controls: Drive, Bass, Treble, and three-position Frequency selector
• Three low-frequency voices for tight, balanced, or fuller response
• Bass control adds focused low-end without excessive flub
• Treble control ranges from transparent presence to vintage British-style cut
• Premium all-analog circuitry
• True-bypass switching
• 1/4" instrument input
• 1/4" amplifier output
• Standard 9V DC center-negative power
• Dimensions: 4.8" × 2" × 2.6"
• Weight: 0.6 lb.
• Five-year limited manufacturer warranty

Why Buy from Professor Nigel’s?

Curated, Working-Player Gear

Every product at Professor Nigel’s earns its place by offering something genuinely useful, musically compelling, or creatively distinct—not simply by filling catalog space.

Authorized Dealer Confidence

Professor Nigel’s is an authorized Warm Audio dealer. This pedal is brand new, sourced through authorized distribution, and covered by the full manufacturer warranty.

Fast, Reliable Shipping from Phoenix, AZ

Orders are inspected, packed carefully, and shipped quickly from our shop in Phoenix, Arizona, with clear communication throughout the process.